Big Katuna wrote:
I won't disagree that the Dometic is a better, quieter, unit but my Colemans work fine in Florida 100 degree summers.
I would not blindly replace the ac yet. Have a tech look at it. It might be a capacitor or control board.
I too would check the unit or have it checked before buying a new one. Often its some thing simple. Our Coleman works great up to 117 degrees. The Dometic we had first was repaired 3 times and just kept failing. But seems everyone just builds bad stuff from time to time. So we just replaced it with a coleman and no more problems.